[Question] Extending `skipping whitespaces` mechanism?

[kerrytazi]

I'm trying to make a parser for something like this:

// single line comment
let a = 3;

Since ctpg automatically skips whitespaces I use rule like this:

stmt("let", token, "=", expr, ";")

But since "single line comment" can appear anywhere I need to implement all the variations:

stmt("let", comment, token, "=", expr, ";"),
stmt("let", token, comment, "=", expr, ";"),
stmt("let", token, "=", comment, expr, ";"),
...

I ain't doing that...

I tried to make comment optional but parser doesn't recognize empty (zero length) term.

Any ideas or is it simply not supported?